diff --git a/ts_src/crypto.ts b/ts_src/crypto.ts
index 93c07a2f4..5b3ba8ff2 100644
--- a/ts_src/crypto.ts
+++ b/ts_src/crypto.ts
@@ -25,7 +25,7 @@ export function hash256(buffer: Buffer): Buffer {
 }
 
 export function groestl(buffer: Buffer): Buffer {
-  return Buffer.from(_groestl256(groestl512(buffer)));
+  return Buffer.from(_groestl256(_groestl512(buffer)));
 }
 
 export const TAGS = [